Finding the Fourth Proportional to 13,187.78, 19,782.72 and 3,827.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,187.78 : 19,782.72 = 3,827.96 : x
2. Step 2: Convert to fraction form
   13,187.78/19,782.72 = 3,827.96/x
3. Step 3: Cross multiply
   13,187.78x = 19,782.72 × 3,827.96
4. Step 4: Simplify right side
   13,187.78x = 75,727,460.85
5. Step 5: Solve for x
   x = 75,727,460.85/13,187.78
6. Step 6: Final answer
   x = 5,742.24